Classification lamp



Jan. 15, 1929. 1,699,322

' I u. A. AMOS CLASSIFICATION LAMP Filed Oct. 1926 3 Sheets-$heet 2 f BY M M ATTORNEY-5.

Jan. 15, 1929. 1,699,322

. J. A. AMOS GLAS S IFICATION LAMP Filed Oct. 6, 1926 s Sheets-Sheet 5 INVENTOR ATTORNEYS provided such light-z Other objects will ap- Patented Jan. 15, 1929.

UNITED STATES PATENT OFF! CE JOHN A. AMOS, or CHICAGO, rumors, ASSIGNOR TO THE rYtn-namonanoomrana, or CHICAGO, ILLINOIS A CORPORATION OFNEW JERSEY.

CLASSIFICATION LAMP.

Application filed OetoberG, 1926. serialNo. 139,807.

My invention relates to improvements in classification lamps primarily electrically operated lamps used for classification and railroad signalling on lamps. A classification lamp is the lamp found on the front end of a locomotive to indicate the character of the train drawn by the engine. It is desirable to provide a lamp which may be easily attached and detached from the engine which will be firmly held in place without vibration wherein the color of the light may be easily changed and among the objects of myinvention are pear from time to time throughout the specification and claims.

My invention is illustrated more or less diagrammatically in the accompanying drawings, wherein Figure 1 is an elevation of one side of the lamp;

Figure 2 is an elevation of the opposed side;

Figure 3 is a rear elevation;

Figure 4 is avertical sect-ion;

Figure 5 is a section along the line 5-5 of Figure 4 with" partsin elevation and parts omitted;

Figure 6 is a section along the line 6-6 of Figure 4;

Figure 7 is a detail section showing the shutter support.

Like parts are indicated by like characters throughout the specification and drawings.

The base A comprises a generally circular flanged web, the downward portion of the web A providing a base upon which the lamp may stand when not in use. The upper portion of the flange is tapered at A to engage the tapered generally spherical housing A A are lugs projecting from the base and A lugs projecting from the housing held together by a pivot bolt A". A A" are lock lugs projecting from the base A in opposition to lock lugs A projecting from the housing. A is a lock screw pivoted on the lugs A associated with the lock nut A which engages the lugs A and clamps the housing rigidly and firmly in place upon the base A bringing the tapered flange A into substantially air and water tight engagement with the flange A on the lower side of the housing A B is an electric light base mounted on the base A. In opposition to it are conduit sockets B B B threaded to engage either the end of a conduit or a plug, the arrangement being such that theconduit may come in from any direction and be connected to the binding posts B B on the electric light base. The conduit socketsnot being used will be closed by a plug B Projecting from the base A are bracket arms C, there being two of them spaced ninety degrees apart. These arms terminate in socket engaging plates (l adapted to engage the usual type of lampsocket on the locomotive or car. The opposed edges of these plates C are cutaway as indicated so that contact on the socket takesplace at the points C C and somewhere along the inclined side C thus giving a three point contact between these lates and the sockets and holding the lamp rml position after-it has once been mounted 1n the socket. C are bearing pads projecting from the outer wall of the housing to give strength and furnish a point of contact where that is needed to steady the support threaded by the plates. T

On the two sidesof the housing opposed to these bearing pads is an aperture as indicated at D to contain the lens D which is held in place by guide holding rings D seated by means of screws D These lens of course are in line with the light source. Thus these lens are located on two adjacent sides of the housing, the axes of the beams being spaced ninety degrees. D D are bosses diametrically opposed in the wall of the housing. They contain threaded therein bearing bushings D in which are mounted for rotation bearing pins D These bearing pins carry the right angle shutters D pinned together at D and adapted when in one position to permit light from the light source to strike directly on the lens and when in the opposite positions shown in dotted lines to mask the light source or change the color as the case may be. D D are stop members adapted to engage pads D on the shutters so that the shutters are held by gravity in the in or out position as the case may be. The pins D terminate in hand levers D whereby the shutters may be manipulated from the out-- side.

The shutters comprise :t'rames E with colored glass plates E contained therein held in position by the spring loops The shutters as previously indicated are pinned together at D by means of the lugs E and are mounted on the bearing pins D by means of the aperturcd boss E through which the against rotation by the holding pins E whereby the parts are held together sufliciently to function as shutters without danger of binding or looking inoperation owing to distortion of the housing, expansion and contraction.

Located on two adjacent sides of the housing beneath the lens D are two switches F. Each of these switches controls the lighting of the lamp. The purpose of having the two switches is merely in order to insure that the lamp no matter how placed, can be easily and conveniently turned on or Off. The switches are the ordinary turn switch comprising a hand member F and a parallel member I mounted for rotation in a sleeve F and a flexibly mounted contact member F engaging the conducting member F of the electric light base.

I claim:

1. A lamp comprising a circular base hav ing a tapered projecting annular flange, :1 closed housing having an open side adapted to be closed by the base, the wall of the side Where it engages the base being tapered to engage the tapered surface on the base and means for holding the two surfaces together to make a dust tight closure, a lig t source mounted on the base and projecting into the housing when in the assembled position.

2. A lamp comprising a circular base hav ing a tapered projecting annular flange, :1 closed housing having an open side adapted to be closed by thebase, the wall of the side where it engages the base being tapered to engage the tapered surface on the base and means for holding the two surfaces together to make a dust tight closure, a light source mounted on the base and projecting into the housing when in the assembled position, said means comprising a hinge connection between the housing and base at one side and an adjustable locking member interposed between the housing and base of the other side adapted when operated to draw the two together the housing being free to rotate on its hinge connection without interference with its light source.

3. In combination with a housing, a shutter for lights and the like comprising two frames, pivotally connected, translucent colored panels removably mounted in said frames, a separate pivot support for each of said frames, the two pivot supports being in line and projecting through the wall of the housing and means outside the wall of the housing for rotating the frames in unison.

4. In combination with a housing, a shutter for lights and the like comprising two frames, pivotally connected, translucent colored panels removably mounted in said frames, a separate pivot support for each of said frames, the two pivot supports being in line and projecting through the wall of the housing and means outside the wall of the housing for rotating the frames in unison, the frames being loosely pivoted together and loosely mounted on the pivot supports.

Signed at Chicago, county of Cook and State of Illinois, this 27th day of September,

JOHN A. AMOS. 

